Process and device for the remote transmission of signals and ap

Details Process and device for the remote transmission of signals and ap Process and device for the remote transmission of signals and ap

1982-12-13

1986-08-26

Caldwell, Sr., John W.

Communications: electrical

Systems

Selsyn type

340310A, 34087013, H04Q 900, G08C 1916

Patent

active

046085521

ABSTRACT:
A process of remote transmission of signals issued by at least one sensor over a transmission line, wherein the power necessary to supply the sensor is transmitted by that line in the form of an alternating current signal of approximately constant intensity, and wherein the line fulfills the triple function of supplying power to that sensor, of transmitting interrogation signals from a central station to that sensor and of transmitting data signals in response to that interrogation signal from the sensor to the central station. A device for incorporating this process is also disclosed.

REFERENCES:
patent: 3483546 (1969-12-01), Ausfeld
patent: 3967264 (1976-06-01), Whyte
patent: 4007458 (1977-02-01), Hollabaugh
patent: 4077030 (1978-02-01), Helava
patent: 4198621 (1980-04-01), Roper
patent: 4222035 (1980-09-01), Lohoff
patent: 4357606 (1982-11-01), Fortescue
patent: 4398178 (1983-08-01), Russ
patent: 4418333 (1983-11-01), Schwarzbach
patent: 4422073 (1983-12-01), Winner
patent: 4464653 (1984-08-01), Winner

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